[TASK] Add extension title to meta data and use it

Instead of reading the composer.json / ext_emconf.php
of extensions at runtime just to retrieve the extension title,
use the existing package meta data API to store and retrieve this
information.

With these changes in place, the workaround for title handling can be
removed and CLI extension list can also use the new API and show the
(shorter) title instead of the description.

In the long run, it should be evaluated, whether the UI
can be changed to be able to show longer descriptions, or
whether a short description (aka title) is important enough
to introduce a public configuration for it.

Releases: master
Resolves: #95701
Change-Id: Iee51f200bb5017f3a6516ebf9e55b2c6eb125949
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71888


Tested-by: core-ci <typo3@b13.com>
Tested-by: Simon Gilli <typo3@gilbertsoft.org>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Helmut Hummel <typo3@helhum.io>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Simon Gilli <typo3@gilbertsoft.org>
Reviewed-by: Helmut Hummel <typo3@helhum.io>